Improvement in nut-locks



UNITED STATES JOHN H. CHAMPION, OF NEW LONDON, CONNECTICUT, ASSIGNOR OFONE- PATENT OFFICE FIFTH HIS RIGHT TO TREADWELL CLEVELAND, OFNEW YORK,N. Y.

IMPROVEMENT IN NUT-LOCKS.

Specification forming part of Letters Patent No. 184,835, dated November28, 1876; application filed August 26, 1875.

To all whom it may concern:

Be it known that I, J oHN H. CHAMPION, of the city of New London, countyof New London, State of Connecticut, have invented a new and usefulScrew-Nut, of which the following is a -full description, referencebeing bad to the accompanying drawings, forming part of thisspecification.

Figure 1 represents a side view of the nut. Fig. 2 represents across-section. Fig. 3 represents a longitudinal transverse section.

The object of my improvement is to render a screw-nut less liable to bedisplaced by the ordinary motion to which it may be subjected.

To accomplish this purpose a recess or cavity is cut in the inside ofthe nut, about midway in the length of the screw. This re-v cess isshown by the letters f and. F in Fig ures 2 and 3.

By this means one or more of the threads of the screw are removed, andin the recess or cavity made, as above mentioned, a piece of leather or;other suitable material is securely fastened, and the nut is then readyfor use.

When the nut is screwed into its position the threads on the bolt havecut into the leather or other material recesses exactly corresponding tothe size Of"Sl1Gh threads, and.

